Why is my BMW X3 making a strange rattling noise?

I recently noticed that my BMW X3 is making a strange rattling noise while driving. It seems to be coming from the engine or exhaust. What could be causing this and how can I fix it?

The most common cause of a rattling noise in a BMW X3 is a loose heat shield on the exhaust system. You can fix this by carefully tightening the bolts or taking it to a mechanic. Just be sure not to over-tighten as this can cause damage.

Another possibility is that there is an issue with the fuel injectors. If they are dirty or clogged, they can cause a rattling noise. I would recommend having them cleaned or replaced by a professional.